I used to attend a fair number of Vikings games. That frequency started to decline after I got Gopher season tickets and started to really enjoy the college game.
From my viewpoint, back in the 80's and 90's the "type" of people that attended Gopher and Viking games generally felt about the same. Things really changed on the Viking side in the late 90's and has maintained ever since, while the crowds at Gopher games feel about the same.
It really stuck out to me because when I did attend my most recent rare Viking game, the atmosphere was vastly different than the one I had become used to in the 80's and 90's. Way more face paint. Younger. Lots of younger couples with two drinks in each hand, guzzling booze. Way more obscenities and yelling at each other. All in all, it felt like a roadhouse compared to the "old days".
I don't doubt that this happens to some extent at Gopher games, but I can emphatically say it doesn't happen AT ALL in our section, or anywhere within my viewpoint. But, admittedly I don't move around the stadium much. I tend to go from the tailgate directly to our seats, and with the exception of an occasional trip to the bathroom, I just sit in our seats until the game is over.